A series of offset perfecting press units are stacked for printing multicolor images on both surfaces of a web traveling successively therethrough. Each printing unit has two plate cylinders each split into a pair of halves, and two blanket cylinders in rolling contact with the respective plate cylinders and, via the web, with each other. The plate cylinder halves are capable of independent displacement both axially and circumferentially of the plate cylinder for image registration both transversely and longitudinally of the web. The four plate cylinder halves are driven independently from as many drive motors via respective drive linkages. Two of the four drive motors are further coupled via two associated ones of the drive linkages to the blanket cylinders. Motor power is first transmitted to the blanket cylinders, which are less in diameter than the plate cylinders, then to the two plate cylinder halves.
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5. A web-fed offset lithographic press for printing multicolor images on a continuous web of paper or like material traveling through a series of printing units, at least one of the printing units comprising:
(a) a plate cylinder split into a pair of halves for concurrently printing on one side of the web a pair of images in juxtaposition transversely thereof, the pair of halves of the plate cylinder being capable of independent displacement both axially and circumferentially of the plate cylinder; (b) a blanket cylinder in rolling contact with the plate cylinder, the blanket cylinder being less in diameter than the plate cylinder; (c) a first and a second drive motor capable of synchronous operation; (d) a first drive linkage drivingly coupling the first drive motor to one of the plate cylinder halves; and (e) a second drive linkage drivingly coupling the second drive motor to the blanket cylinder and thence to the other of the plate cylinder halves.
1. A web-fed offset lithographic press for printing multicolor images on a continuous web of paper or like material traveling through a series of printing units, at least one of the printing units comprising:
(a) a plate cylinder split into a pair of halves for concurrently printing on one side of the web a pair of images in juxtaposition transversely thereof, the pair of halves of the plate cylinder being capable of independent displacement both axially and circumferentially of the plate cylinder; (b) a blanket cylinder in rolling contact with the plate cylinder, the blanket cylinder being different in diameter from the plate cylinder; (c) a first and a second drive motor capable of synchronous operation; (d) a first drive linkage drivingly coupling the first drive motor to one of the plate cylinder halves; and (e) a second drive linkage drivingly coupling the second drive motor to the other of the plate cylinder halves and to the blanket cylinder, the second drive linkage transmitting power from the second drive motor first to a smaller diameter one, then to a larger diameter one, of said other plate cylinder half and the blanket cylinder.
2. The web-fed offset lithographic press of
(a) first and second axial adjustment means for causing axial displacement of the respective halves of the plate cylinder independently of each other with a view to fine positioning of the pair of images transversely of the web; (b) the first and the second drive linkage drivingly coupling the first and the second drive motor to the plate cylinder halves via the first and the second axial adjustment means, respectively.
3. The web-fed offset lithographic press of
(a) a second plate cylinder split into a pair of halves for concurrently printing on another side of the web a pair of images in juxtaposition transversely thereof, the pair of halves of the second plate cylinder being capable of independent displacement both axially and circumferentially of the plate cylinder; (b) a second blanket cylinder in rolling contact with the second plate cylinder and with the first recited blanket cylinder, the second blanket cylinder being different in diameter from the second plate cylinder; (c) a third and a fourth drive motor capable of synchronous operation; (d) a third drive linkage drivingly coupling the third drive motor to one of the second plate cylinder halves; and (e) a fourth drive linkage drivingly coupling the fourth drive motor to the other of the second plate cylinder halves and to the second blanket cylinder, the fourth drive linkage transmitting power from the fourth drive motor first to a smaller diameter one, and then to a larger diameter one, of the other of the second plate cylinder halves and the second blanket cylinder.
4. The web-fed offset lithographic press of
(a) first and second axial adjustment means for causing axial displacement of the respective halves of the first recited plate cylinder independently of each other with a view to fine positioning of the pair of images transversely of the web; and (b) third and fourth axial adjustment means for causing axial displacement of the respective halves of the second plate cylinder independently of each other with a view to fine positioning of the pair of images transversely of the web; (c) the first and the second drive linkage drivingly coupling the first and the second drive motor to the halves of the first plate cylinder via the first and the second axial adjustment means, respectively; and (d) the third and the fourth drive linkage drivingly coupling the third and the fourth drive motor to the halves of the second plate cylinder via the third and the fourth axial adjustment means, respectively.
6. The web-fed offset lithographic press of
(a) a drive gear rotatable with the second drive motor; (b) an intermediate gear meshing with the drive gear and arranged coaxially with the plate cylinder; (c) a first driven gear meshing with the intermediate gear and coupled to the blanket cylinder for joint rotation therewith; and (d) a second driven gear meshing with the first driven gear and coupled to said other of the plate cylinder halves for joint rotation therewith.
7. The web-fed offset lithographic press of
(a) first and second axial adjustment means for causing axial displacement of the respective halves of the plate cylinder independently of each other with a view to fine positioning of the pair of images transversely of the web; (b) the first and the second drive linkage drivingly coupling the first and the second drive motor to the plate cylinder halves via the first and the second axial adjustment means, respectively.
8. The web-fed offset lithographic press of
(a) a second plate cylinder split into a pair of halves for concurrently printing on another side of the web a pair of images in juxtaposition transversely thereof, the pair of halves of the second plate cylinder being capable of independent displacement both axially and circumferentially of the plate cylinder; (b) a second blanket cylinder in rolling contact with the second plate cylinder and with the first recited blanket cylinder, the second blanket cylinder being less in diameter than the second plate cylinder; (c) a third and a fourth drive motor capable of synchronous operation; (d) a third drive linkage drivingly coupling the third drive motor to one of the second plate cylinder halves; and (e) a fourth drive linkage drivingly coupling the fourth drive motor to the second blanket cylinder and thence to the other of the second plate cylinder halves.
9. The web-fed offset lithographic press of
(a) a drive gear rotatable with the fourth drive motor; (b) an intermediate gear meshing with the drive gear and arranged coaxially with the second plate cylinder; (c) a first driven gear meshing with the intermediate gear and coupled to the second blanket cylinder for joint rotation therewith; and (d) a second driven gear meshing with the first driven gear and coupled to said other of the second plate cylinder halves for joint rotation therewith.
10. The web-fed offset lithographic press of
(a) first and second axial adjustment means for causing axial displacement of the respective halves of the first recited plate cylinder independently of each other with a view to fine positioning of the pair of images transversely of the web; and (b) third and fourth axial adjustment means for causing axial displacement of the respective halves of the second plate cylinder independently of each other with a view to fine positioning of the pair of images transversely of the web; (c) the first and the second drive linkage drivingly coupling the first and the second drive motor to the halves of the first plate cylinder via the first and the second axial adjustment means, respectively; and (c) the third and the fourth drive linkage drivingly coupling the third and the fourth drive motor to the halves of the second plate cylinder via the third and the fourth axial adjustment means, respectively.
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1. Field of the Invention
This invention relates to printing presses, particularly to offset lithographic presses, and more particularly to a web-fed, multicolor offset lithographic press having a plurality of printing units for printing different color images on a continuous web of paper or like printable material. Still more particularly, the invention deals with such a press wherein each printing unit has at least one plate cylinder which is split in part along a plane normal to the cylinder axis into a pair of halves for independently carrying a pair of printing plates thereby concurrently to print a pair of images in transverse juxtaposition on the web. Even more particularly, the invention concerns how to drive the split plate cylinder or cylinders and associated blanket cylinder or cylinders of each printing unit.
2. Description of the Prior Art
Japanese Patent No. 2,566,895 is hereby cited as disclosing a web-fed multicolor offset press with split plate cylinders, in combination with a cylinder drive mechanism similar to the instant invention. Shown in this parent is a stack of four printing units, each of offset perfecting press design, for printing four-color images on both sides of the web as the latter travels through the successive printing units. Each printing unit comprises two split plate cylinders and two blanket cylinders. Each plate cylinder is in rolling contact with one blanket cylinder, which in turn is in rolling contact with the other blanket cylinder. The printing plates on each plate cylinder print the inked images on one blanket cylinder, from which the images are transferred or offset to the web as it passes between the two blanket cylinders. Using this blanket-to-blanket printing method, the four printing units print four-color images on both sides of the web.
The positions of the pair of halves of each plate cylinder of each printing unit are independently adjustable both axially and circumferentially of the plate cylinder with respect to the plate cylinder halves of the other printing units. Such axial and circumferential adjustment of the plate cylinder halves, together with the printing plates mounted thereon, is essential for the four-color images to be printed on the web in exact registration both transversely and longitudinally of the web.
The Japanese patent cited above suggests use of but one electric motor for driving the total of four halves of the two plate cylinders, as well as the two blanket cylinders. It also shows axial adjustments for independent axial displacement, and circumferential adjustments for independent circumferential displacement, of the plate cylinder halves.
In offset lithographic printing in general, as taught by the Japanese patent above as well as by Japanese Unexamined Patent Publication No. 61-182951, the driving torque should first be transmitted to a smaller diameter one, then to a larger diameter one, of each plate- and blanket-cylinder combination. This driving scheme is known to minimizes the adverse effects of backlashes that are unavoidably present in the drive linkages, realizing a higher degree of image registration on the web. That scheme has therefore been adopted in the prior art press in driving the two split plate cylinders and two blanket cylinders of each printing unit by one electric motor.
The arrangement of smaller diameter parts upstream of larger diameter ones in the direction of power transmission is per se desirable and acceptable. However, it gave rise to an assortment of difficulties and inconveniences when applied to the driving of the two split plate cylinders and two blanket cylinders by one motor. First, the drive linkages required too many parts and components of highly involved configurations. Such numerous parts and components demanded too much time, labor, and skill for fabrication, assemblage, and maintenance. Mechanical troubles were also just as frequent as the drive means were complex. Additionally, as the many parts of the linkages rotated at high speed and in engagement with one another, noise production posed a serious hazard to the mental health of the printing plant personnel.
Making the matter worse were the axial and circumferential adjustments that must be provided for each half of each plate cylinder in close constructional and functional association with the cylinder drive mechanisms. Designed for precise multicolor image registration both transversely and longitudinally of the web, these adjustments were themselves highly complex in construction as they should not interfere with torque transmission to the plate cylinder halves as well as to the blanket cylinders. They must, moreover, permit each plate cylinder half to be displaced independently of the other plate cylinder half, and the axial and circumferential travels of each plate cylinder half must be independent of each other. The axial and circumferential adjustments were therefore themselves extremely complex in construction, demanding much time, labor and skill for fabrication and assemblage of the constituent parts and for maintenance of the completed mechanisms.
These axial and circumferential adjustments were, furthermore, so intricately interrelated with the prior art single-motor cylinder drive mechanism that the latter was rendered even more complex in construction. Thus the single-motor drive mechanism together with the axial and circumferential adjustments was highly susceptible to trouble and malfunctioning, adding substantively to the downtime of the press.
The present invention has it as an object, in a web-fed, multicolor offset lithographic press of the kind defined, to provide a simplified, easier-of-assemblage, more trouble-free, and less noise-producing drive system for the split plate cylinder or cylinders and blanket cylinder or cylinders of each printing unit.
Another object of the invention is to attain the first recited object of the invention with a smaller diameter one or ones of the split plate cylinder or cylinders and blanket cylinder or cylinders disposed upstream of a larger diameter one or ones thereof with respect to the direction of driving torque transfer for reduction of the effects of backlashes of the drive linkages.
Another object of the invention is to associate, both functionally and constructionally, the cylinder drive system with the axial and circumferential adjustments of the plate cylinder halves without any mutual interference, and in such a manner that these adjustments too are made simpler in construction.
Briefly, the invention may be summarized as a web-fed offset lithographic press for printing multicolor images on a continuous web of paper or like material traveling through a series of printing units. Each, or at least one, of the printing units comprises a plate cylinder split into a pair of halves for separately carrying printing plates thereby concurrently to print on one side of the web a pair of images in juxtaposition transversely thereof, the pair of halves of the plate cylinder being capable of independent displacement both axially and circumferentially of the plate cylinder; and a blanket cylinder in rolling contact with both halves of the plate cylinder. Two drive motors capable of synchronous operation are provided in combination with two drive linkages. One drive linkage drivingly connects one drive motor to one of the plate cylinder halves. The other drive linkage drivingly connects the other drive motor to the other plate cylinder half and to the blanket cylinder, transmitting power first to a smaller diameter one, then to a larger diameter one, of the plate cylinder half and the blanket cylinder.
Preferably, and as in the preferred embodiment to be presented subsequently, each printing unit is of the known offset perfecting press construction, additionally comprising a second plate cylinder split into a pair of halves for concurrently printing on another side of the web a pair of images in juxtaposition transversely thereof, and a second blanket cylinder in rolling contact with both halves of the second plate cylinder and with the first recited blanket cylinder. The web has its opposite surfaces printed at one time while traveling between the first and the second blanket cylinder.
In this application the cylinder drive system comprises a third drive linkage drivingly connecting a third drive motor to one half of the second plate cylinder, and a fourth drive linkage drivingly connecting a fourth drive motor to the other half of the second plate cylinder and to the blanket cylinder. Like the second mentioned drive linkage, the fourth drive linkage transmits power first to the smaller diameter one, then to the larger diameter one, of the second plate half cylinder and the second blanket cylinder.
It is also preferred that there should be provided first and second axial adjustment means for causing axial displacement of the respective halves of the first recited plate cylinder independently of each other, and in the case of offset perfecting press construction, third and fourth axial adjustment means for causing axial displacement of the respective halves of the second plate cylinder independently of each other, with a view to fine repositioning of the pair or pairs of images transversely of the web. The drive linkages connect the drive motors to the plate cylinder halves via the axial adjustment means.
Thus, according to the invention, the halves of the plate cylinder or cylinders are individually driven from the separate motors via the separate drive linkages under synchronization control. Not only the drive linkages to the plate cylinder half or halves alone, but also those to the plate cylinder half or halves and the blanket cylinder or cylinders, are therefore much simpler in construction than the prior art in which all these components are driven from one motor. Although the invention requires four cylinder drive motors for each printing unit of offset perfecting press design, compared to one according to the prior art, this disadvantage is more than amply offset by the resulting simplicity of the drive linkages.
The independent driving of the plate cylinder halves offers the additional, but even more pronounced, advantage that the independent cylinder drive means serve not only for driving the plate cylinder or cylinders and blanket cylinder or cylinders but for circumferentially repositioning the plate cylinder halves relative to the circumferential positions of those of the other printing units in order to achieve image registration longitudinally of the web. No dedicated circumferential adjustments, such as those used heretofore, are needed. A very substantive saving is accomplished in parts and components for the driving and circumferential adjustment of the plate cylinder halves, realizing corresponding curtailment of the installation costs.
The noted simplification of the cylinder drive system and the circumferential adjustments in particular is also believed to lead to significant reduction of troubles, easier maintenance, and, in consequence, lessening of running costs. Still further the simplified cylinder drive system with the associated axial adjustments permits assemblage and maintenance by workers having ordinary skill in the art. Further yet, since the simplified drive system has fewer contacting parts, much less noise is to be produced than heretofore, with the consequent improvement of the working environment for printing plant personnel.
The above and other objects, features and advantages of this invention and the manner of realizing them will become more apparent, and the invention itself will best be understood, from a study of the following description and appended claims, with reference had to the attached drawings showing the preferred embodiment of the invention.
The invention is believed to be best applicable to a web-fed, multicolor offset lithographic press having a plurality of, four for example, printing units for printing as many different color images on a web of paper or like material as the latter travels through the successive printing units.
Each printing unit is of the familiar offset perfecting press configuration, having a plate cylinder PC and a blanket cylinder BC on one side of the web W, and another plate cylinder PC' and another blanket cylinder BC' on the other side of the web. The plate cylinders PC and PC' are each split into a pair of halves PCa and PCb, and PCa' and PCb', for separately carrying pairs of printing plates. Each pair of plate cylinder halves PCa and PCb, or PCa' and PCb', are conventionally individually movable toward and away from each other. The two blanket cylinders BC and BC' are held against each other via the web W, each utilizing the other as the impression cylinder. The plate cylinders PC and PC' print the images on the respective blanket cylinders BC and BC', from which the images are offset to the opposite sides of the web W.
It is understood that in this embodiment of the invention, the diameter of each blanket cylinder BC or BC' inclusive of the blanket is less than that of each plate cylinder PC or PC' inclusive of the printing plates. This difference between the overall diameters of the blanket cylinders and the plate cylinders determine in part the configurations of the drive means therefore.
As will be noted from
More specifically, bracketed to the outside of the first side wall 1, at each of the four printing units P1-P4, are an electric motor 4 for driving the first blanket cylinder BC and one half PCa of the first plate cylinder PC via a drive linkage GD, and another electric motor 4' for driving the second blanket cylinder BC' and one half PCa' of the second plate cylinder PC' via another similar drive linkage GD'. Also, to the outside of the second side wall 2, and at each of the four printing units P1-P4, there are similarly bracketed still another electric motor 5 for driving the other half PCb of the first plate cylinder PC via a drive linkage GP, and yet another electric motor 5' for driving the other half PCb' of the second plate cylinder PC' via another similar drive linkage GP'.
It is understood that the four cylinder drive motors 4, 4', 5 and 5' are capable of synchronous rotation by having their phases and speeds of rotation separately detected and matched according to the prior art. Additionally, these four motors are capable of being independently accelerated and decelerated, each for having its phase of rotation advanced or delayed with respect to the others. Consequently, the printing plates on the four plate cylinder halves of each printing unit are circumferentially displaceable, so to say, relative to the printing plates of the other printing units so that the multicolor images printed in all the printing units P1-P4 may be in register with one another longitudinally of the web W.
Before proceeding to a detailed inspection of
The other drive linkage GD' similarly comprises a drive gear 10' rotatable with the drive motor 4', a first intermediate gear 12', a second intermediate gear 14' coaxial with the second plate cylinder PC' but rotatable independently therefrom, a blanket cylinder gear 18' rotatable with the second blanket cylinder BC', and a plate cylinder gear 16' rotatable with the second plate cylinder half PCa'. Being less in overall diameter than the second plate cylinder PC', the second blanket cylinder BC' is also driven before the second plate cylinder.
The drive motor 5 drives only the second half PCb of the first plate cylinder PC, the first blanket cylinder being driven by the drive motor 4. A drive pinion 11 on the output shaft of the drive motor 5 meshes with an intermediate gear 13 and thence with a driven gear 15 rotatable with the first plate cylinder half PCb. The drive motor 5' likewise drives the second plate cylinder half PCb' via a train of gears 11', 13' and 15'.
Referring now more specifically to
The first plate cylinder gear 16 must impart rotation to the first plate cylinder trunnion PCe without interference with the axial adjustment 29. Employed to this end is, first of all, an outer sleeve 50, seen in both
The first plate cylinder gear 16 of the drive linkage GD is mounted fast on the outer sleeve 50. Driven by the first blanket cylinder gear 18, the first plate cylinder gear 16 rotates with the first plate cylinder trunnion PCe via the two splined sleeves 50 and 52. Thus is the first plate cylinder half PCa gear-driven from the drive motor 4 but nevertheless movable axially within the limits required for image registration transversely of the web W.
The second intermediate gear 14 of the drive linkage GD is also concentrically, but rotatably, mounted on the outer sleeve 50. The rotation of the second intermediate gear 14 is therefore not directly transmitted to the plate cylinder trunnion PCe but only to the blanket cylinder gear 18, with the result that the blanket cylinder BC is driven from the motor 4 before the plate cylinder PC.
It will be observed from
The reader's attention is now invited to
As has been stated in connection with
Besides being externally gear-toothed, the driven gear 15 is internally straight-splined at 51 to mesh with external splines on an inner sleeve 53, so that the driven gear 15 rotates with the inner sleeve 53 but permits the latter to travel axially thereof. The inner sleeve 53 is fitted over a trunnion PCd, which is coaxially secured to the first plate cylinder half PCb for joint rotation therewith, and keyed at 55b to the trunnion PCd for both rotary and axial motion therewith. Consequently, the driven gear 15 rotates with the first plate cylinder half PCb but permits the latter to travel axially for transverse image registration.
Seen also in
What follows is a detailed discussion of the axial adjustments 29,
As shown in FIG. 3 and on an enlarged scale in
At 39 is seen an extension of the trunnion PCe which is journaled in the bearing means 40. The bearing means 40 are locked by the bearing carrier 35 against axial displacement relative to the same, and further relative to the trunnion extension 39 both by a color 39a formed thereon and by a trunnion extension end cap 41. Thus the bearing carrier 35 with the bearing means 40 transmits only the axial motion of the threaded rod 37 to the trunnion extension 39, thence to the trunnion PCe, and thence to the first plate cylinder half PCa.
Printing plates, not shown, are to be mounted to the respective halves of both first and second plate cylinders PC and PC' preparatory to printing. Each positively engaged at one with one half of the first plate cylinder PC in a predefined circumferential position thereon, as is well known in the art, one pair of printing plates may be jointly wrapped around the respective cylinder halves PCa and PCb by turning these cylinder halves by the cylinder drive motors 4 and 5 under synchronization control. Another pair of printing plates may be likewise mounted to the halves PCa' and PCb' of the second plate cylinder PC' by turning these cylinder halves by the cylinder drive motors 4' and 5' under synchronization control.
Then the cylinder drive motors 4, 4', 5 and 5' may be set in synchronous rotation. With reference to
It is to be appreciated that the blanket cylinder gears 18 and 18' are upstream of the plate cylinder gears 16 and 16' with respect to the direction of power flow through the drive linkages GD and GD'. The upstream blanket cylinder gears 18 and 18' drive the blanket cylinders BC and BC' which are less in overall diameter than the plate cylinders PC and PC'. This driving arrangement leads to reduction of the adverse effects of backlashes that are present in the drive linkages GD and GD'.
Referring to
Possibly, the two pairs of images printed on both surfaces of the web W by each of the four printing units P1-P4 of the press may each be displaced longitudinally and/or transversely of the web with respect to the image printed on the other surface of the web by the same printing unit or to the different color images printed by the other printing units. All such image displacements may be individually amended in the following manners.
First, for cancellation of image displacement in either of the opposite longitudinal directions of the web, the four cylinder drive motors 4, 4', 5 and 5' of each printing unit may be individually made momentarily higher or lower than the traveling speed of the web, that is, than the rotational speed of the other cylinder drive motors of the same printing unit and of all the cylinder drive motors of the other printing units. The particular printing plate being driven by the cylinder drive motor in question may thus be advanced or delayed in phase of rotation, until the image thereby printed comes into register with the other images longitudinally of the web.
For image registration transversely of the web, on the other hand, the four axial adjustment motors 31 and 31' may be individually energized to cause independent axial displacement of the associated plate cylinder halves PCa, PCb, PCa' and PCb' by the axial adjustments 29 and 29'. With the printing plates on these plate cylinder halves thus repositioned axially of the plate cylinders PC and PC', the image positions on the web will be readjusted transversely thereof for registration with the other required images thereon.
Despite the foregoing detailed disclosure it is not desired that the instant invention be limited by the exact showing of the drawings or the description thereof. For instance, the invention could be applied to a variety of offset lithographic press configurations other than the one employed herein. Each printing unit, moreover, need not be of offset perfecting press configuration for concurrently printing both sides of the web. It is not required or desired, either, that all the printing units be of the same construction; instead, only one of them may have a split plate cylinder or cylinders in combination with a blanket cylinder or cylinders, together with the independent cylinder drive system and other means taught by the invention. Still further, in any application of the invention, a variety of modifications and alterations may be adopted in order to conform to design preferences or the specific requirements of the application, without departing from the proper scope or fair meaning of the claims attached hereto.
Patent | Priority | Assignee | Title |
7444932, | Mar 09 2005 | 3M Innovative Properties Company | Apparatus and method for making microreplicated article |
7767273, | Mar 09 2005 | 3M Innovative Properties Company | Apparatus and method for producing two-sided patterned web in registration |
7804649, | Sep 09 2003 | 3M Innovative Properties Company | Microreplicated achromatic lens |
7931841, | Mar 09 2005 | 3M Innovative Properties Company | Microreplicated article |
8740599, | Mar 09 2005 | 3M Innovative Properties Company | Apparatus and method for producing two-sided patterned web in registration |
8968629, | Mar 09 2005 | 3M Innovative Properties Company | Apparatus and method for producing two-sided patterned web in registration |
Patent | Priority | Assignee | Title |
5771804, | Apr 12 1996 | MAN Roland Druckmaschinen AG | Drive with resister device for a printing unit of a rotary printing machine |
5950538, | Jul 23 1996 | Koenig & Bauer--Albert Aktiengesellschaft | Printing unit having drive means |
5979317, | Jun 12 1997 | MAN Roland Druckmaschinen AG | Drive for a printing group of a rotary printing machine |
6050185, | Nov 26 1997 | SHANGHAI ELECTRIC GROUP CORPORATION | Printing unit for a web-fed rotary printing press |
6129017, | Dec 20 1996 | Koenig & Bauer Aktiengesellschaft | Cylinder for rotary press |
6332397, | Jul 28 1997 | Koenig & Bauer Aktiengesellschaft | Print unit |
6334389, | Dec 12 1997 | Koenig & Bauer AG | Drive mechanism for the cylinders of a printing press |
6338298, | Dec 29 1993 | Maschinenfabrik Wifag | Rotary printing machine with blanket cylinders and plate or form cylinders integrated in pairs in cylinder groups |
JP10167960, | |||
JP61182951, | |||
JP7186374, |
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